From: Stefan Monnier <monnier@iro.umontreal.ca>
To: "Mattias Engdegård" <mattiase@acm.org>
Cc: emacs-devel@gnu.org
Subject: Re: master ea93326: Add `union' and `intersection' to rx (bug#37849)
Date: Wed, 11 Dec 2019 10:10:33 -0500 [thread overview]
Message-ID: <jwvfthqyk4q.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <A7D4DC03-5CC3-4DEC-9328-4C96BFB97DD2@acm.org> ("Mattias \=\?windows-1252\?Q\?Engdeg\=E5rd\=22's\?\= message of "Wed, 11 Dec 2019 12:17:25 +0100")
>> Why not (re)use `or` instead of `union`? IOW make it an optimization?
> It probably could, but having to explain the restrictions to the user felt
> a bit messy, so I went with a neatly closed collection of set operations
> (union, intersection and complement).
But as a user now I wonder what's the difference between `or` and
`union` and also why there has to be a difference.
Stefan
next prev parent reply other threads:[~2019-12-11 15:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191210213842.5388.30110@vcs0.savannah.gnu.org>
[not found] ` <20191210213843.EB6A520A23@vcs0.savannah.gnu.org>
2019-12-10 21:52 ` master ea93326: Add `union' and `intersection' to rx (bug#37849) Stefan Monnier
2019-12-11 11:17 ` Mattias Engdegård
2019-12-11 15:10 ` Stefan Monnier [this message]
2019-12-12 22:48 ` Mattias Engdegård
2019-12-13 13:55 ` Stefan Monnier
2019-12-13 17:03 ` Mattias Engdegård
2019-12-13 17:13 ` Stefan Monnier
2019-12-13 17:43 ` Mattias Engdegård
2019-12-13 23:03 ` Stefan Monnier
2019-12-15 11:08 ` Mattias Engdegård
2019-12-15 14:53 ` Stefan Monnier
2019-12-15 19:23 ` Mattias Engdegård
2019-12-15 20:04 ` Stefan Monnier
2019-12-15 20:42 ` Stefan Monnier
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